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provider must perform optimistic version checks when obtaining the database lock. If these checks fail ... type is pessimistic and the entity has a version attribute, the persistence provider must perform ... on the database in use and the locking mechanisms used by the provider , the hint may or may not be observed

on a StoredProcedureQuery object, the provider will call execute on an unexecuted stored procedure query before ... object, the provider will call execute on an unexecuted stored procedure query followed by ... result is not an update count. The provider will call execute on the query if needed. Return

and type. This method is not required to be supported by the provider . Parameters: position - position ... ().stream() , however persistence provider may choose to override this method to provide additional ... this specification must be observed by the provider . Vendor-specific hints that are not recognized by a provider

to be supported by the provider . Parameters: position - position type - type Return: parameter object Throws ... provider may choose to override this method to provide additional capabilities. Return: a stream ... must be observed by the provider . Vendor-specific hints that are not recognized by a provider

, the persistence provider's default foreign key strategy will be used. The ConstraintMode value is used ... element is not specified, the provider will generate foreign key constraints whose update and delete ... specified, it defaults to a provider -generated name. Since: JPA 2.1 ConstraintMode value default

.ValidationMode The validation mode to be used by the provider for the persistence unit. Since: JPA 2.0 Enum Constants AUTO If a Bean Validation provider is present in the environment, the persistence provider must perform the automatic validation of entities. If no Bean Validation provider is present in

. Defaults to SQL generated by the provider for the column. Since: JPA 2.0 ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign ... provider's default foreign key strategy will apply. Since: JPA 2.1 boolean insertable default true

a column that is used to maintain the persistent order of a list. The persistence provider is responsible for maintaining the order upon retrieval and in the database. The persistence provider ... . The persistence provider maintains a contiguous (non-sparse) ordering of the values of the order column

Indicates that the persistence provider should pick an appropriate strategy for the particular database ... one. A vendor may provide documentation on how to create such resources in the event that it does not ... Indicates that the persistence provider must assign primary keys for the entity using a database

"" (Optional) Name of the primary key column in the table. Defaults to a provider -chosen name ... to a provider -chosen value to store in the primary key column of the generator table Since: JPA 1.0 ... . Defaults to a name chosen by persistence provider . Since: JPA 1.0 UniqueConstraint

. Since: JPA 1.0 ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify ... element is specified in either location, the persistence provider's default foreign key strategy ... @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key

Since: JPA 2.0 PersistenceUnitUtil getPersistenceUnitUtil () Return interface providing access to utility ... of the specified type to allow access to the provider -specific API. If the provider's EntityManagerFactory ... class Throws: PersistenceException - if the provider does not support the call Since: JPA 2.1

generation is in effect. A value of CONSTRAINT will cause the persistence provider to generate a foreign key constraint. If the foreignKeyDefinition element is not specified, the provider will generate ... being generated. A value of PROVIDER _DEFAULT will result in the provider's default behavior (which may or

TypedQuery object, the persistence provider is responsible for ensuring that all updates to the state ... are visible to the processing of the query. The persistence provider implementation may achieve ... , the persistence provider must not flush to the database. Since: JPA 1.0 Enum Constants AUTO (Default

default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation ... , the persistence provider's default foreign key strategy will apply. Since: JPA 2.1 boolean insertable default ... provider . Since: JPA 1.0 String name default "" (Optional) The name of the foreign key column

JPA Method in javax.persistence.EntityManagerFactory T unwrap (   Class  cls ) Return an object of the specified type to allow access to the provider -specific API. If the provider's ... : an instance of the specified class Throws: PersistenceException - if the provider does not support the call Since: JPA 2.1

the provider . Vendor-specific hints that are not recognized by a provider must be silently ignored. Portable ... and the locking mechanisms used by the provider , this hint may or may not be observed. Parameters: hintName

the provider . Vendor-specific hints that are not recognized by a provider must be silently ignored ... and the locking mechanisms used by the provider , this hint may or may not be observed. Parameters

JPA Method in javax.persistence.Query T unwrap (   Class  cls ) Return an object of the specified type to allow access to the provider -specific API. If the provider's query ... : PersistenceException - if the provider does not support the call Since: JPA 2.0

JPA Annotation GeneratedValue Target: METHOD, FIELD Implemented Interfaces: Annotation Provides ... persistence provider . Since: JPA 1.0 GenerationType strategy default AUTO (Optional) The primary key generation strategy that the persistence provider must use to generate the annotated entity primary key. Since: JPA 1.0

JPA Enum Constant in javax.persistence.ValidationMode AUTO If a Bean Validation provider is present in the environment, the persistence provider must perform the automatic validation of entities. If no Bean Validation provider is present in the environment, no lifecycle event validation takes place. This is the default behavior. Since: JPA 2.0

JPA Method in javax.persistence.Cache T unwrap (   Class  cls ) Return an object of the specified type to allow access to the provider -specific API. If the provider's Cache ... : PersistenceException - if the provider does not support the call Since: JPA 2.1

to allow access to the provider -specific API. If the provider's Cache implementation does not support ... that it implements. Return: an instance of the specified class Throws: PersistenceException - if the provider does not support the call Since: JPA 2.1

JPA Method in javax.persistence.EntityManager T unwrap (   Class  cls ) Return an object of the specified type to allow access to the provider -specific API. If the provider's ... class Throws: PersistenceException - if the provider does not support the call Since: JPA 2.0

should be lazily loaded or must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider ... to the persistence provider runtime. Since: JPA 1.0 String mappedBy default "" The field that owns

is a requirement on the persistence provider runtime that the collection elements must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Since: JPA 2.0 Class targetClass default

this specification must be observed by the provider . Vendor-specific hints that are not recognized by a provider

JPA Interface PersistenceUtil Utility interface between the application and the persistence provider (s). The PersistenceUtil interface instance obtained from the Persistence class is used to determine the load state of an entity or entity attribute regardless of which persistence provider in

JPA Annotation Attribute in javax.persistence.AssociationOverride ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key ... , the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

JPA Annotation Attribute in javax.persistence.JoinTable ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key constraint ... , the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

JPA Annotation Attribute in javax.persistence.JoinTable ForeignKey inverseForeignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key ... either location, the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

JPA Annotation PersistenceProperty Implemented Interfaces: Annotation Describes a single container or persistence provider property. Used in PersistenceContext . Vendor specific properties may be included in the set of properties, and are passed to the persistence provider by the container

cannot be obtained, and the database locking failure results in transaction-level rollback, the provider ... only statement-level rollback, the provider must throw the LockTimeoutException (and must not mark

JPA Annotation Attribute in javax.persistence.JoinColumns ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key constraint ... is specified in either location, the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

@ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key ... , the persistence provider's default foreign key strategy will apply. Since: JPA 2.1 JoinColumn [] joinColumns

. The EAGER strategy is a requirement on the persistence provider runtime that the associated entity must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Since: JPA

JPA Annotation Attribute in javax.persistence.CollectionTable ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key ... , the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

is a requirement on the persistence provider runtime that the associated entity must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Since: JPA 1.0

, the default catalog is used. Since: JPA 2.0 ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT ... . If no foreign key annotation element is specified in either location, the persistence provider's

must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider runtime that the associated entities must be eagerly fetched. The LAZY strategy is a hint to the persistence provider

is a requirement on the persistence provider runtime that the associated entities must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.PrimaryKeyJoinColumns ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key ... annotation element is specified in either location, the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key constraint ... element is specified in either location, the persistence provider's default foreign key strategy

JPA Annotation Attribute in javax.persistence.PrimaryKeyJoinColumn ForeignKey foreignKey default @ForeignKey( PROVIDER _DEFAULT) (Optional) Used to specify or control the generation of a foreign key ... specified, the persistence provider's default foreign key strategy will apply. Since: JPA 2.1

JPA Method in javax.persistence.Query Stream getResultStream () Execute a SELECT query and return the query results as an untyped java.util.stream.Stream . By default this method delegates to getResultList().stream() , however persistence provider may choose to override this method to provide

statements generated by the persistence provider . Since: JPA 2.0 int length default 255 (Optional) The column ... updatable default true (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider . Since: JPA 2.0

is a requirement on the persistence provider runtime that the associated entities must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Since: JPA 1.0

of the field requested to be provided to the StateManager . Parameters: pc - the calling PersistenceCapable ... ) The value of the field requested to be provided to the StateManager . Parameters: pc - the calling ... ;currentValue) The value of the field requested to be provided to the StateManager . Parameters: pc

the same field, and if the package and class name are not provided by the parameter in this API ... the instance to provide the value of the single field identified by fieldNumber. Parameters: fieldNumber - the field whose value is to be provided by a callback to the StateManager's providedXXXField method

restriction on this access. JDO implementations get access to the functions provided by this class ... is responsible for implementing the ObjectIdFieldSupplier to provide the values for the key fields ... a non-null answer). The caller provides the stateless "method object" that does the actual